It has been commonly known for a number of years that certain foods, such as white bread and corn flakes, are bad for cardiac health, but new research from Israeli scientists shows just how 'high carb' foods cause heart attacks.
The researchers at Tel Aviv University have carried out a study which shows exactly how high carb foods increase the risk for heart problems - Dr Michael Shechter of Tel Aviv University's Sackler School of Medicine and the Heart Institute of Sheba Medical Center working in collaboration with the Endocrinology Institute "looked inside" the arteries of students as they were eating a variety of foods.
By using a clinical and research technique pioneered by his laboratory in Israel, Dr Shechter was able to visualize what happens inside arteries before, during and after eating high carb foods and exactly what happens inside the body when the wrong foods for a healthy heart are eaten and he found that foods with a high glycemic index distended brachial arteries for several hours.
The elasticity of arteries anywhere in the body can be a measure of heart health but when aggravated over time, a sudden expansion of the artery wall can cause a number of negative health effects, including reduced elasticity, which can cause heart disease or sudden death.
The landmark research represents a first in medical history and Dr Shechter says it is very hard to predict heart disease but doctors know that high glycemic foods rapidly increase blood sugar and those who over-indulge on these foods have a greater chance of sudden death from heart attack.
Dr Shechter says their research shows the link between diet and what's happening in real time in the arteries and could lead to a whole new way to show patients the effects of a poor diet on the body.
The research involved 56 healthy volunteers, divided into 4 groups :- one group ate a cornflake mush mixed with milk, a second a pure sugar mixture, the third bran flakes, while the last group was given a placebo (water).
Over a four week period, Dr. Shechter applied his method of "brachial reactive testing" to each group - this uses a cuff on the arm similar to those used to measure blood pressure, which can visualize arterial function in real time.